New build $800-ish

Hi. Thanks for your time.

This is going to be my 3rd build (after my p4 2.8c, and amd athlon 754 3000+). I've done some looking and am in need of some opinions for my new build. I'm going to use this build for some gaming at high to max settings(i.e. Crysis, CoD4, etc.) and maybe some video editing in the near future. I'm sure to OC this system, and already OC'd my 2 systems, so i probably know what i'm doing   . Here's my (planned) specs. (Also including future upgrades)

BTW, system noise is not an issue, i don't mind having 7+ fans spinning loudly, but overheating is.

CPU: Pentium Dual Core E2160 (future upgrade: Core 2 Quad Q6600 g0)

MB: ASUS Commando

Cooling: (Reuse: Coolermaster Hyper 212) (Future upgrade: Prometeia Mach II GT Phase Change Cooler) <-- yes, i will OC THAT much

RAM: no idea on brand DDR2-800 8gb <-- need help here

CASE: no need (reuse)

PSU: 550w HEC Winpower <-- served me well since my P4 build (Future upgrade: 1000w SILVERSTONE STRIDER) <-- overkill maybe, but better to be sure  

GPU: (reuse: INNO3d 8800gt 512mb) (maybe future upgrade: ati series 4000?)

HDD: (reuse)

CD/DVD: (reuse)

Not including accessories (monitor, keyboard, speakers, OS), I'm aiming for around $700-800. Willing to splurge on more drives later on. I'm thinking of holding off SLI or CrossfireX. Any help would be useful. Thanks.